abs (Y, average number of days absent per employee) salary (X1, average employee salary in $) swork (X2, availability of shift work, coded 1 if yes and 0 if no)

SUMMARY OUTPUT Regression Statistics Multiple R 0.533260276 R Square 0.284366522 Adjusted R Square 0.250288737 Standard Error 2.94024132 Observations 45 ANOVA df SS MS F Significance F Regression 2 144.2789789 72.13948943 8.344630503 0.000888185 Residual 42 363.0907989 8.645019022 Total 44 507.3697778 Coefficients Standard Error t Stat P-value Lower 95% Upper 95% Intercept 9.402303546 1.596463864 5.889455914 5.72785E-07 6.180509033 12.6240981 salary -0.000209424 6.25953E-05 -3.345674725 0.001737422 -0.00033575 -8.3101E-05 swork 2.249029976 0.904866897 2.485481548 0.017003304 0.422934648 4.0751253